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Finding the Fourth Proportional to 262,886.40, 362,707.20 and 155,404.80

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Solution

The fourth proportional to 262,886.40, 362,707.20 and 155,404.80 is: 214,413.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,886.40 : 362,707.20 = 155,404.80 : x
  2. Step 2: Convert to fraction form
    262,886.40/362,707.20 = 155,404.80/x
  3. Step 3: Cross multiply
    262,886.40x = 362,707.20 × 155,404.80
  4. Step 4: Simplify right side
    262,886.40x = 56,366,439,874.56
  5. Step 5: Solve for x
    x = 56,366,439,874.56/262,886.40
  6. Step 6: Final answer
    x = 214,413.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.